通过 router.getCurrentNavigation 获取当前 url 与先前访问的 url 进行比较可以判断出来
this.router.events.pipe(
    filter(x => x instanceof NavigationEnd),)
    .subscribe(() => {
        console.log('NavigationEnd');
        const nav = this.router.getCurrentNavigation();
        const currentUrl = nav?.initialUrl.toString();
        const previousUrl = nav?.previousNavigation?.initialUrl.toString()
        console.log('reload: ' + (currentUrl === previousUrl));
    });
            还有一个解决方法
export class AppLayoutTabsComponent implements OnInit, AfterViewInit {
    private _previousUrl = '';
    constructor(
        private readonly router: Router,
        private readonly spinner: SpinnerService) { }
    async ngOnInit() {
        this.router.events.subscribe(async (ev) => {
            if (ev instanceof NavigationStart) {
                debounceTime(50);
                if (ev.url !== this._previousUrl) {
                    await this.spinner.toggle(true);
                }
                this._previousUrl = ev.url;
            }
        });
    }
}